On Friday, January 28, 2022 1:32:52 PM EST gene heskett wrote: > On Friday, January 28, 2022 10:18:38 AM EST Steffen Möller wrote: > > ... > > > > >> Processing linuxcnc-uspace_2.9.0~pre0_arm64.deb... > > >> ... > > > > > > Install them on a pi, and run latency-test please. > > > > Are you running on 64bit? Then the packages should work. > > Not on the pi's, always armhf. arm64 is too slow. This runs fine on a > pi3 even, but the rpi3 is dragging its tongue on the floor, I had to > move some of the lower response stuff to a slower thread to give the > quick stuff enough time to work on the rpi3b and can't do much else at > the same time, but it did get the job done before the rpi4 came out. > > Machine control, in close enough to real time demand low irq latency. > For normal pc's AMD processors don't do that even running rtai > kernels, but intels from about 586 had managed it well enough to work > but i5's are amazing. Even atoms ran it well enough to get the job > done here for about a decade but they've all died for various reasons > associated with the bblb syndrome now. I've got 2 I need to recycle > but haven't made the trip to the recycle trailer yet. I bought a stack > of off-lease Dells to replace the atoms with, works very well with my > only complaint about Dells being the 2 sata ports max. Running from > SSD's you would swear they are brand new state of the art machines. > > You may be able to build it on arm64's but linuxcnc checks to see if > certain resources are available that are only available from a > realtime, fully preemptable kernel, making a graceful exit if they > aren't found. > Tell you what, I just found a debian armhf net-install image for armhf in 11.2, and since I can't get it built on a raspios bullseye, I'll rewrite that card and start from scratch with a genuine debian 11.2 install, just to see if I can make it run, with this kernel, on your bullseye.
When I have something to report, I will. Cheers, Gene Heskett. -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author, 1940) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
